2004/08/31 by S. D. H. Hsu, F. Sannino · 1 citation
Physics and Astronomy · #hep-ph #hep-th
paper · pdf · doi:10.1016/j.physletb.2004.11.040
published as Phys.Lett. B605 (2005) 369-375 · RevTex, 2-columns, 5 pages, 1 fig. Revised version, including additional discussion of the UV theory and the low-energy effective theory, to appear in Physics Letters B
arxiv created 2004/11/18 · arxiv updated 2009/12/01
We exhibit a solution to the strong CP problem in which ultraviolet physics renders the QCD theta angle physically unobservable. Our models involve new strong interactions beyond QCD and particles charged under both the new interactions and ordinary color.